Cosmological Anomalies and Interacting Dark Sectors

This talk will discuss what's new with some of the most interesting looking cosmological tensions: the Hubble tension, the growth of structure tension (S8, growth rate, Lyman Alpha) and Big Bang Nucleosynthesis (Lithium and Deuterium). Some of these tensions suggest that dark matter may be part of a dark sector with dark radiation which interacts with the dark matter.